Bleeding tool



Aug. 2, 1949. A. Tl DELOSUA 2,477,864

BLEEDING TOOL Filed Kay 15, 1947 Fig. I.

I4 H 8 D c B I2 G E '0 Inventor Fig .3 Agnes 7. DElosu'a Patented Aug. 2, 1949 UNITED STATES PATENT OFFICE BLEEDING TOOL Agnes T. DElosua, Pemberton, N. J.

Application May 15, 1947; Serial No. 748,363

4 Claims. 1

The present invention relates to novel and im proved means which is especially, but not necessarily, adapted for use by mechanics in hydraulic brake adjusting and repairing establishments.

An object of the, invention is to provide "a simple, practical, economical and readily usable appliance characterized by a wrench and a line bleeder hose properly connected and associated with said wrench.

It is a matter of common knowledge that it is the present day practice, when bleeding a wheel cylinder, to simply attach a bleeder hose or tube to the bleeder valve, to then open the valve, and later close the same, by way of a one-quarter-inch wrench. Some mechanics simply allow the fluid to run down over the wheel .and on the ground and others retrieve it in a suitable receptacle'such as a jar, bottle or the like.

In carrying out the principles of the present invention a combination device is provided, said device embodying a wrench having an appropriate handle, and also having the bleeder hose attached thereto, whereby'to permit the user to accomplish desired results by way of a single efllcient operation and to place himself in a satisfactory position to watch the air bubbles in the fluid as same discharges from the hose and enters a collecting bottle.

Other objects and advantages will become more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the views:

Figure 1 is a fragmentary assembly view showing parts ofa standard or conventional type of hydraulic brake system and illustrating, in particular, a wheel cylinder, the bleed valve carried thereby, and the improved device or means constituting the present invention;

Figure 2 is a view in section and elevation of v the wrench or tool per se; and

Figure 3 is an elevational view of the wrench at right angles to Figure 2.

Referring now to the drawings the wheel cylinder is denoted at A, the same being conventional in type and including a cylinder B, properly sealed cups C and coiled spring D between the cups;

The bleeder valve, which is of the usual needle type, is denoted at E and has a tool or wrench grip F and hose accommodating head G. The lines which supply the brake fluid to the wheel cylinder are denoted at H and I.

The tool proper comprises a wrench 5 including a handle 6 with a suitably shaped finger-grip or hand piece I. At the outer end of the handle is a right angularly disposed head 8 having a central bore 9 and a socket including a flat faced tool grip l0 and a tapered or conical seat I l to accommodate the aforementioned head 6. The grip I0 is adapted to engage the tool grip of the needle valve as shown in Figure 1. Communicating with the bore and projecting from the opposite end of the head is a beaded nipple 12 to accommodate the bleeder 'hose IS. The hose, at its intake end, is secured to the nipple by way of an appropriate clamp ill, (see Figure 1). At this point the hose is provided with a spring i5 inserted therein to prevent creasing or buckling when bent during use.

The discharge end of the hose is adapted to empty into a suitable jar or receptacle IS. The retrieved brake fluid is denoted at I! in Figure 1.

In operation the wrench is applied to the needle valve as shown in Figure 1 and is then turned counterclockwise and the valve is opened, whereby to permit the fluid to be bled through the hose and into the receptacle I8. Turning the wrench clockwise reverses and closes the valve after which the wrench may be removed from the valve.

Changes in shape, size, materials and rearrangement of details and parts may be resorted to in actual practice, so long as they do not depart from the spirit of the invention or the scope of the appended claims, as is well undering at right angles to the longitudinal axis of the head.

.2. The structure as specified in claim 1, the

bore intermediate its ends at the juncture of the socket wrench and bleeder passage being of conical form and providing a seat.

3. As a new article 0! manufacture, a hand tool comprising a socket wrench detachably applicable to a needle-type bleeder valve, said socket wrench having a port for discharging fluid and air and further having a rigid handle at right angles to the longitudinal axis of said socket, and a bleeder hose connected with said port.

4. In combination with the structure as specifled in claim 1, a spring within the hose adjacent the head to prevent creasing or buckling of the hose when bent during use.

AGNES T. DELOSUA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 72,453 Chambers Dec. 24, 1867 727,858 Stier May 12, 1903 1,622,163 Neiderhauser Mar. 22, 1927 1,647,975 Tuttle Nov. 1, 1927 1,668,245 McGowan May 1, 1928 2,117,747 Smith May 17, 1938 

